The Active vs Passive Debate
The question of whether to use active funds or passive index trackers has been one of the most debated in investment management for decades. The evidence is nuanced — and international investors with complex tax, currency, and time horizon needs should approach it with pragmatism rather than ideology.
The core academic case against active management is well established: most active funds underperform their benchmarks after fees over long periods, particularly in efficient markets. The S&P SPIVA (S&P Indices Versus Active) study, published annually, consistently shows that over 10–20 year periods, 80–90% of US large cap active funds underperform the S&P 500 index after fees.
But this aggregate statistic does not mean active management is never valuable. The key is knowing which markets and contexts reward active skill, and how to identify managers who genuinely possess it.
When Active Management Can Add Value
Inefficient markets are where active managers have the best chance of outperforming:
Small cap equities: Smaller companies receive less analyst coverage than large cap stocks. Information is less uniformly available, prices are less efficiently set, and there is more opportunity for a skilled analyst to identify genuinely mispriced businesses. The evidence for active management adding value in small cap equities is meaningfully stronger than in large cap.
Emerging market equities: Markets with less institutional coverage, greater corporate governance variability, political complexity, and currency dynamics give skilled active managers more to work with. Passive EM ETFs are also forced to hold every constituent regardless of quality — including state-owned enterprises with poor governance and deeply indebted businesses.
High yield credit: Fundamental credit analysis — assessing a company's ability to service debt — requires judgement that passive replication cannot replicate. In a passive high yield ETF, the most indebted issuers often have the highest weighting (because they issue more bonds). Skilled credit managers can avoid value traps.
Alternative and private assets: Private equity, private credit, hedge funds, and infrastructure are not accessible via passive indices. Active manager selection is the only route to these markets.
Markets where passive is very likely to win:
US large cap equities: The S&P 500 is among the most efficiently priced markets in the world. Information is instantly incorporated into prices. After fees, most active US large cap managers underperform over the long run. A low-cost UCITS index ETF (Vanguard or iShares) is hard to beat consistently.
UK large cap (FTSE 100): Similar logic applies. Active outperformance exists but is uncommon over full cycles after charges.
How to Evaluate a Fund Manager: The Key Criteria
1. Track Record Over a Full Market Cycle
A minimum five-year track record is a starting point; ten years across a full market cycle (ideally including a significant bear market) is far more meaningful. Look at:
- Absolute returns — what the fund actually returned.
- Benchmark comparison — returns relative to an appropriate benchmark (not a flat market or sector average that flatters the manager's style).
- Peer group ranking — where does the manager rank against similar funds in the same category?
- Return attribution — where did the returns come from? Consistent stock selection? Country or sector bets? Leverage? Luck during a single year?
A manager who ranked in the top quartile of their peer group for six or seven of the past ten years, including through a bear market, provides much stronger evidence than one with a spectacular two- or three-year run.
2. Appropriate Benchmark
Always compare a fund against its appropriate benchmark, not just a generic market index. A UK small cap fund should be compared against a UK small cap index, not the FTSE 100. A global sustainable fund should be benchmarked against a comparable ESG universe.
Benchmarking against an inappropriate index can make a mediocre manager look brilliant or a skilled one look poor, simply because of style or sector differences.
3. Key Person Risk
The most common failure mode in active fund management is key person risk: a brilliant manager leaves, and the fund's performance deteriorates. High-profile examples include:
- Neil Woodford: One of the UK's most celebrated fund managers. When Woodford Investment Management's flagship fund suspended redemptions in 2019 and was subsequently wound up, investors faced significant losses. The fund was built around Woodford's personal investment convictions, with insufficient team depth or process to operate without him.
- Anthony Bolton: Fidelity's legendary UK equity manager who delivered exceptional long-term returns. His less successful stint managing a China fund illustrated how individual skill in one market does not necessarily transfer.
When assessing key person risk, ask:
- Is the investment process documented and repeatable?
- Does the team have genuine depth — capable analysts and portfolio managers who could step up?
- Is the manager's stake in the business aligned with investors' long-term interests?
- How long has the team been together?
4. AUM and Capacity
As a fund grows, the manager's ability to act on investment ideas narrows. Buying a meaningful position in a £200m small cap company is straightforward for a £50m fund; it is impossible for a £5bn fund without moving the price.
This is called capacity constraint — the risk that a fund's success attracts so much new money that the manager can no longer replicate the conditions that generated past returns. The best active managers close their funds to new investors before AUM grows so large it kills their alpha.
When assessing a fund, consider whether the current AUM is still manageable given the fund's investment universe and typical position sizes.
5. Style Consistency
A genuine active manager should have a defined, consistent investment philosophy. Value managers should be consistently valuation-focused; growth managers consistently growth-focused. Style drift — a manager who switches their approach to chase recent performance — is a warning sign. It suggests decisions are driven by commercial pressures (keeping up with competitors) rather than investment conviction.
Charges: AMC, OCF, and Performance Fees
Annual Management Charge (AMC): The manager's headline fee. For active equity funds, AMCs typically range from 0.50% to 1.00% per annum. For alternative or absolute return funds, they can be higher.
Ongoing Charges Figure (OCF): The AMC plus all other costs borne by the fund annually (custody, administration, audit, directors, regulatory). OCF is always higher than AMC and is the number to use when comparing fund costs. Active equity funds typically have OCFs of 0.70–1.20%; bond funds somewhat lower; alternatives 1.50–2.00%+.
Performance fees: Some funds, particularly hedge funds, absolute return funds, and alternative strategies, levy a performance fee on top of the base charge — typically 20% of gains above a high-water mark and/or hurdle rate. Performance fees are theoretically aligned with investor interests (the manager only earns more if investors do well), but in practice, fee structures vary widely and investors should understand exactly how performance fees are calculated.
Transaction costs: The OCF does not include portfolio transaction costs (stamp duty, brokerage). These are disclosed separately in Key Investor Information Documents (KIIDs) as a "transaction costs" figure.
Share Class Selection
Income vs Accumulation
Income (or distribution) units pay out the fund's investment income as regular cash distributions — typically quarterly or semi-annually. Appropriate for investors who need regular income from their portfolio.
Accumulation units reinvest distributions automatically. The fund price rises to reflect reinvested income. No cash is paid out. Suitable for investors seeking long-term capital growth who do not need income withdrawals.
In the UK, accumulation units create a deemed distribution — a tax liability arises on the amount that would have been distributed, even though no cash was paid out. This is sometimes a surprise for investors who believe accumulation means no income tax.
Currency-Hedged Share Classes
For funds primarily invested in foreign currencies, hedged share classes remove the currency translation effect back to the investor's home currency. A UK investor holding a global equity fund in an unhedged GBP share class will see returns fluctuate partly with GBP/USD exchange rate movements. A GBP-hedged share class removes this, using rolling FX forwards to deliver the fund's base currency return in GBP.
Hedging carries a cost (the FX forward differential). As discussed above, for long-term equity investors the benefit is debatable; for bond investors, where currency volatility can dominate modest coupon returns, hedging is more commonly used.
Clean vs Bundled Share Classes
Historic UK retail fund pricing included trailer commissions — fees embedded in the fund's annual charge that were paid to advisers or platforms as ongoing distribution remuneration. The Retail Distribution Review (RDR) in 2013 banned new commission arrangements for UK retail advised clients, leading to the creation of clean share classes that strip out commission payments and are therefore cheaper.
Clean share classes (often denoted "C", "I", or "Institutional") should always be used by advised investors where available. Bundled classes include a built-in adviser/platform commission that is of no benefit to the investor if they are paying a separate advisory fee.
Using Fund Research Tools
Several tools provide comprehensive data for comparing active funds:
FE Analytics (FundExpert): Widely used by UK advisers for fund research, peer group analysis, risk-adjusted performance metrics, and attribution. Also provides access to FE Crown Fund Ratings.
Morningstar: Global fund data provider with proprietary analyst ratings, quantitative ratings, style box methodology, and sector-by-sector peer group comparisons. Morningstar Gold, Silver, Bronze, Neutral, and Negative analyst ratings reflect fundamental qualitative assessment by research analysts.
Trustnet: Free UK-focused fund comparison tool, good for quick peer group screening.
AJ Bell Favourite Funds / Hargreaves Lansdown Wealth Shortlist: UK platform-specific curated fund lists — useful as a starting screen but reflect commercial relationships alongside quality assessments.
For HNW investors working with a professional adviser, bespoke manager research from independent research services (e.g., Rayner Spencer Mills, Square Mile, Defaqto) provides more granular analysis than publicly available fund comparison tools.
Regulated vs Unregulated Collective Investment Schemes (UCIS)
Active funds distributed in the UK are either Regulated Collective Investment Schemes (regulated by the FCA, available to retail investors) or Unregulated Collective Investment Schemes (UCIS). UCIS are not regulated to the same standard, cannot be marketed to the general UK public, and are typically only accessible to professional or high-net-worth investors who meet specific suitability tests.
Some UCIS offer genuine diversification benefits not available via regulated funds — certain hedge funds, private credit vehicles, and real asset funds. They also carry higher risk, less liquidity, and more limited investor protection. Always seek independent regulated advice before committing to a UCIS.
Building an Active-Passive Portfolio
The evidence does not support being either entirely passive or entirely active. A sensible approach for international investors is:
- Core allocations in efficient markets (US large cap, global investment grade bonds): use low-cost passive UCITS ETFs.
- Satellite allocations in less efficient markets (small cap, EM equities, high yield, alternatives): consider active managers where evidence of genuine skill is available.
- Private and alternative assets: by nature require active manager selection.
- Total portfolio cost: maintain discipline on overall weighted average cost. A portfolio with 60% in passive ETFs (0.10–0.20% OCF) and 40% in active funds (0.80–1.20% OCF) might average 0.40–0.55% — efficient for a genuinely active component.
How Global Investments Can Help
At Global Investments, our investment team conducts proprietary manager research across active funds, combining quantitative performance analysis with qualitative assessment of investment process, team stability, and capacity management.
For internationally mobile HNW clients, we build portfolios that blend efficient passive exposures with carefully selected active managers in markets where we believe skill is genuinely rewarded — held in the most tax-efficient structure available given your residency and investment objectives.
To discuss how active and passive management might be combined in your portfolio, contact our advisory team for an initial conversation.
Capital is at risk. The value of investments and income from them can fall as well as rise. Past performance is not a reliable indicator of future results. Tax treatment depends on individual circumstances and may change. This article is for information purposes only and does not constitute personalised financial advice.
Frequently Asked Questions
When does active management tend to add more value than passive?
Active management has historically been more likely to add value in markets with greater inefficiency — small cap equities, emerging markets, high yield credit, alternatives, and private assets. These markets have more information asymmetry, less analyst coverage, and more behavioural mispricing for skilled managers to exploit. In large cap developed market equities (US S&P 500, FTSE 100), passive index funds outperform most active managers over the long run after fees, largely because prices are rapidly adjusted by high-frequency and institutional traders, leaving little inefficiency to exploit.
What is the minimum track record I should look at for an active manager?
A minimum of five years is generally necessary to have statistical significance, but even five years can include a single market cycle that flatters or disadvantages a particular investment style. Ten years across a full market cycle — including at least one significant bear market — provides much more meaningful evidence. Managers who outperformed only during a bull market or only during a specific factor cycle (e.g., a value manager who looked brilliant in 2021–2022 but had dreadful returns 2013–2020) should be evaluated with this context in mind.
What is the difference between AMC and OCF?
The Annual Management Charge (AMC) is the headline fee charged by the fund manager for running the fund. The Ongoing Charges Figure (OCF) — also called Total Expense Ratio (TER) in some contexts — is broader and includes the AMC plus all other costs borne by the fund: administration, custody, audit, legal fees, and regulatory costs. The OCF is the better measure of what investors actually pay. Some funds also levy performance fees on top of the OCF.
What is key person risk and how should I manage it?
Key person risk is the risk that the fund's performance is driven primarily by one or a small number of named managers, and that the departure of those individuals would significantly damage the fund's prospects. When assessing key person risk: review whether the investment process is documented and repeatable (not just in one person's head); check whether the team is deep enough to continue if the lead manager leaves; look at the firm's succession planning; and note whether past performance is attributable to the team or just the individual. Consider diversifying across multiple managers and styles to reduce dependence on any single person.
What is the difference between accumulation and income share classes?
Income share classes pay out dividends and interest income to investors as cash distributions, typically quarterly or semi-annually. Accumulation share classes automatically reinvest distributions back into the fund, compounding returns over time without the investor needing to reinvest manually. For investors who need regular income, income units are appropriate. For long-term growth investors, accumulation units are typically more convenient and cost-efficient (avoiding transaction charges on reinvestment). In the UK, accumulation units still generate a tax liability — known as a 'deemed distribution' — even though no cash is paid out.
This guide is for general information only and does not constitute financial advice or a personal recommendation. The value of investments can fall as well as rise and you may get back less than you invest. Past performance is not a guide to future returns. Tax rules, investment regulations, and the availability of specific investment vehicles change — always verify current rules and seek advice from a qualified independent financial adviser before making any investment decisions.